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An electric kettle has two heating coils. When one of the coils is switched on, a given quantity of water in the kettle starts boiling in 6 minutes. When the other coil only is switched on, then the same amount of water starts boiling in 8 minutes. If the two coils are switched on in the same amount of water starts boiling in 8 minutes. If the two coils are switched on in parallel how much time will the same amount of water take to boil ? Each time the voltage applied is the same. |
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Answer» the ANSWER is to be 8minute |
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